Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Tanoglidis, Dimitrios"'
Autor:
Tanoglidis, Dimitrios, Jain, Bhuvnesh
Vision-Language multimodal Models (VLMs) offer the possibility for zero-shot classification in astronomy: i.e. classification via natural language prompts, with no training. We investigate two models, GPT-4o and LLaVA-NeXT, for zero-shot classificati
Externí odkaz:
http://arxiv.org/abs/2406.17057
The deep learning architecture associated with ChatGPT and related generative AI products is known as transformers. Initially applied to Natural Language Processing, transformers and the self-attention mechanism they exploit have gained widespread in
Externí odkaz:
http://arxiv.org/abs/2310.12069
Autor:
Poh, Jason, Samudre, Ashwin, Ćiprijanović, Aleksandra, Nord, Brian, Khullar, Gourav, Tanoglidis, Dimitrios, Frieman, Joshua A.
Current ground-based cosmological surveys, such as the Dark Energy Survey (DES), are predicted to discover thousands of galaxy-scale strong lenses, while future surveys, such as the Vera Rubin Observatory Legacy Survey of Space and Time (LSST) will i
Externí odkaz:
http://arxiv.org/abs/2211.05836
Measuring the structural parameters (size, total brightness, light concentration, etc.) of galaxies is a significant first step towards a quantitative description of different galaxy populations. In this work, we demonstrate that a Bayesian Neural Ne
Externí odkaz:
http://arxiv.org/abs/2207.03471
Autor:
Tanoglidis, Dimitrios, Ćiprijanović, Aleksandra, Drlica-Wagner, Alex, Nord, Brian, Wang, Michael H. L. S., Amsellem, Ariel Jacob, Downey, Kathryn, Jenkins, Sydney, Kafkes, Diana, Zhang, Zhuoqi
Wide-field astronomical surveys are often affected by the presence of undesirable reflections (often known as "ghosting artifacts" or "ghosts") and scattered-light artifacts. The identification and mitigation of these artifacts is important for rigor
Externí odkaz:
http://arxiv.org/abs/2109.08246
The Intrinsic Shapes of Low Surface Brightness Galaxies: a Discriminant of LSBG Formation Mechanisms
Autor:
Kado-Fong, Erin, Petrescu, Mihai, Mohammad, Majid, Greco, Johnny, Greene, Jenny E., Adams, Elizabeth A. K., Huang, Song, Leisman, Lukas, Munshi, Ferah, Tanoglidis, Dimitrios, Van Nest, Jordan
We use the low surface brightness galaxy (LSBG) samples created from the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP, 781 galaxies), the Dark Energy Survey (DES, 20977 galaxies), and the Legacy Survey (selected via HI detection in the Arecibo
Externí odkaz:
http://arxiv.org/abs/2106.05288
Searches for low-surface-brightness galaxies (LSBGs) in galaxy surveys are plagued by the presence of a large number of artifacts (e.g., objects blended in the diffuse light from stars and galaxies, Galactic cirrus, star-forming regions in the arms o
Externí odkaz:
http://arxiv.org/abs/2011.12437
Publikováno v:
A&A 638, L8 (2020)
Spherical collapse predicts that a single value of the turnaround density (average matter density within the scale on which a structure detaches from the Hubble flow) characterizes all cosmic structures at the same redshift. It has been recently show
Externí odkaz:
http://arxiv.org/abs/2004.04395
Publikováno v:
MNRAS, 491, 3535 (2020)
When analyzing galaxy clustering in multi-band imaging surveys, there is a trade-off between selecting the largest galaxy samples (to minimize the shot noise) and selecting samples with the best photometric redshift (photo-z) precision, which general
Externí odkaz:
http://arxiv.org/abs/1908.07150
Annihilating dark matter particles in nearby subhalos could generate potentially observable fluxes of gamma rays, unaccompanied by emission at other wavelengths. Furthermore, this gamma-ray emission is expected to be spatially extended, providing us
Externí odkaz:
http://arxiv.org/abs/1709.08562